[INFO] fetching crate ruspiro-boot 0.5.3...
[INFO] testing ruspiro-boot-0.5.3 against 1.55.0 for beta-1.56-1
[INFO] extracting crate ruspiro-boot 0.5.3 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate ruspiro-boot 0.5.3 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ruspiro-boot 0.5.3
[INFO] finished tweaking crates.io crate ruspiro-boot 0.5.3
[INFO] tweaked toml for crates.io crate ruspiro-boot 0.5.3 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d7391255c2353e47756a5f9f24da80ed5bbf3777323d4a8941dd7027d11d30f2
[INFO] running `Command { std: "docker" "start" "-a" "d7391255c2353e47756a5f9f24da80ed5bbf3777323d4a8941dd7027d11d30f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d7391255c2353e47756a5f9f24da80ed5bbf3777323d4a8941dd7027d11d30f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d7391255c2353e47756a5f9f24da80ed5bbf3777323d4a8941dd7027d11d30f2", kill_on_drop: false }`
[INFO] [stdout] d7391255c2353e47756a5f9f24da80ed5bbf3777323d4a8941dd7027d11d30f2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 64937a420cabf774df59009eb12e35db0ef8a4f214c92b32c114ee5d0f8812af
[INFO] running `Command { std: "docker" "start" "-a" "64937a420cabf774df59009eb12e35db0ef8a4f214c92b32c114ee5d0f8812af", kill_on_drop: false }`
[INFO] [stderr]    Compiling ruspiro-register v0.5.4
[INFO] [stderr]    Compiling ruspiro-cache v0.4.1
[INFO] [stderr]    Compiling ruspiro-boot v0.5.3 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling ruspiro-arch-aarch64 v0.1.5
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/ruspiro-arch-aarch64-0.1.5/src/lib.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | #![feature(asm)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ruspiro-arch-aarch64` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "64937a420cabf774df59009eb12e35db0ef8a4f214c92b32c114ee5d0f8812af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64937a420cabf774df59009eb12e35db0ef8a4f214c92b32c114ee5d0f8812af", kill_on_drop: false }`
[INFO] [stdout] 64937a420cabf774df59009eb12e35db0ef8a4f214c92b32c114ee5d0f8812af